title: Variation characteristics of chlorpyrifos in nonsterile wetland plant hydroponic system.
abstract: Six wetland plants were investigated for their effect on the degradation characteristics of chlorpyrifos in nonsterile hydroponic system at constant temperature of 28 degrees C. The results showed that the removal rates of chlorpyrifos in the water of plant systems were 1.26-5.56% higher than that in the control without plants. Scirpus validus and Typha angustifolia were better than other hygrophytes in elimination of chlorpyrifos. The removal rates of the two systems were up to 88%. Plants of acaulescent group had an advantage over caulescent group in removing chlorpyrifos. Phytoaccumulation of chlorpyrifos was observed, and the order of chlorpyrifos concentration in different plant tissues was root > stem > leaf. It was also found that chlorpyrifos and its metabolite TCP decreased rapidly at the initial step of the experiment.
authors.affiliation: State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China.
authors.forename: Chuan
authors.initials: C
authors.lastname: Wang
authors.forename: Qiaohong
authors.initials: Q
authors.lastname: Zhou
authors.forename: Liping
authors.initials: L
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Enrong
authors.initials: E
authors.lastname: Xiao
authors.forename: Zhenbin
authors.initials: Z
authors.lastname: Wu
mesh_terms: D001673:Biodegradation, Environmental; D002681:China; D004390:Chlorpyrifos / Q000032:analysis / Q000378:metabolism*; D016000:Cluster Analysis; D018527:Hydroponics; D007306:Insecticides / Q000032:analysis / Q000378:metabolism*; D019684:Magnoliopsida / Q000378:metabolism*; D009928:Organ Specificity; D018515:Plant Leaves / Q000378:metabolism; D018517:Plant Roots / Q000378:metabolism; D018547:Plant Stems / Q000378:metabolism; D013696:Temperature; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000378:metabolism*; D053833:Wetlands
chemical_list: D007306:Insecticides; D014874:Water Pollutants, Chemical; D004390:Chlorpyrifos